A ¥2,000 website package is almost always a template with your logo pasted in, limited to a handful of pages, built on a proprietary CMS the vendor controls, and maintained by a team with no bandwidth for your questions six months later.
The hidden costs: redesign when the template feels stale, migration costs when you outgrow the platform, missed leads from poor SEO, and the time cost of managing a product that doesn't fit your workflow. By year three, the total cost of a cheap site often exceeds ¥20,000 — without the quality of a properly scoped custom project.